There was a pretty decent movie made of Slaughterhouse Five in 1972. If you go to the link I've posted, you might be able to use some stills from the movie. Otherwise, you could Google images of Dresden. This is the scene of the fire bombing Billy Pilgrim lives through, and you might be able to use some images...a lot of cities that survived major damage in wars have left some buildings as they were after the damage, as a reminder to the people. I am not sure if this is true of Dresden. Good luck!